Specification of John Henry Johnson
Subtitle: apparatus for preventing sea sickness
Publisher: Great Seal Patent Office
Published: 1864
Place of publication: London
Language: eng
Subjects: Cradles; Therapy; Motion Sickness
Notes: Cover title.

At head of title: A.D. 1863, 7th August. No. 1953.

John Henry Johnson, of no.47, Lincoln's Inn Fields, in the county of Middlesex, gentleman".